Who is a 90x210 cm mattress suitable for?

A 90x210 cm mattress is a single mattress with extra length, ideal for people taller than 185 cm. A simple rule of thumb: add 20 cm to your body height to find the minimum mattress length you need. That makes a 90x210 the right fit for sleepers from around 190 cm tall. It's also a smart choice for narrower bedrooms or for a double bed setup with two separate mattresses.